<h3>Adding parameters to a function</h3>
<p>
Beside x, you can use other variables, also called parameters. You can
insert a parameter in your equation, simply by typing its name within
the equation (for example <span class="example">a^x</span>).
Crispy Plotter will find these parameters and list them in
a value assignment list called parameter table.
</p>
<p>
A parameter has to comply with the following rules:
<ol>
<li>
	The parameter may consist of lower and upper case characters.
	(a...z and A...Z)
</li>
<li>
	Digits are allowed as well, however the parameter must not
	start with a digit.
</li>
<li>
	"_" is the only special character, which is allowed.
</li>
<li>
	The parameter names "e" and "pi" have a predefined meaning,
	so you may only use them as constants.
</li>
<li>
	Parameter matching is NOT case sensitive.
	So "Alpha","alpha" and "aLpHa" will refer to the same
	parameter.
</li>
</ol>
</p>
<h3>Modifying parameter values</h3>
<p>
All parameters used in your equation are listed in the parameter table.
Select the value cell of one parameter and enter a new value. Crispy
Plotter will attempt to update the function graph with every key press.
Cells with invalid parameter values will be highlighted in red.
</p>
<p>
It is possible to assign a default value to a parameter by
appending a ":" followed by a number value
to the parameter name. For example entering the function
<span class="example">m:2.5*x</span> would assign
2.5 to m right after you hit <span class="key">Enter</span>.
</p>
<p>
You can modify a parameter value as well by using
<img src="res/mousew.gif" title="Mouse Wheel" /> over its value cell or
clicking left on its name cell. The parameter value
will be set to a value between 0 and 1, depending
on the mouse cursor leaning more to the left or right side
of the name cell.
</p>
